I am in the middle of putting headers on my truck right now. My thing is I am confused what I have. After looking on line I find a a.i.r. tube that is bolted on the back of the block and mine is bolted on to the manifolds and runs be hind the motor and between the firewall.
I waslooking for what the hell is goes to but I can not tell. I wiggled it and yanked on it to see if anything moved but I can not tell.

I Need to know what the hell it is hooked up to and when else my need to be blocked off after I pull it.

Not one of the headers I have seen have provisions for this tube. There is one on the PS for the EGR witch I have that one.

I need help ASAP. I can not figure this damn thing out. I need the truck fixed before mid week.

I have two pipes One on each manifold that goes to the back of the block and then runs up behind and then on top of the engine. I had ti just each of the pipes to get the manifolds off. Nothing I can find online is the same as mine.